NIPLATE® 600 Medium phosphorus

Medium phosphorus electroless nickel

Niplate 600 is a medium phosphorus (5-9% in P) electroless nickel plating.
Niplate 600 is the most commonly used of Niplate coatings thanks to its high wear resistance, good corrosion resistance and its affordability.

Excellent wear resistance

Thanks to its hardness and micro crystalline structure Niplate 600 has high wear and fretting resistance.


Thickness being equal, compared to other treatments Niplate is cheaper thanks to the high efficiency of the deposition process.

Uniform thickness

Uniform and constant thickness over the entire surface, including holes, ideal for precision mechanical engineering pieces with reduced tolerances.

Applicable on various metals

All the most common alloys used in mechanical engineering can be coated – iron, copper and aluminium alloys.


Ni P
91÷95% 5÷9%
Ni-P alloy, medium phosphorus electroless nickel plating
MDS Report
IMDS ID: 10647531
Product technical standards
ISO 4527 | NiP(7)
ASTM B733 | Type IV
NSF 51 Cerification
Certified NSF 51 – Food equipment material.
RoHS Conformity
RoHS conform. No restricted-use substances beyond maximum tolerated concentrations.
REACh Conformity
REACh conform. No SVHC in quantities greater than 0.1% by weight.
Coatable metals
Iron alloys Pre-treatment Adhesion Corrosion resistance
Carbon steel ★★★★★ ★★★☆☆
Stainless steel Sandblasting ★★★★☆ ★★★★★
Case-hardened steel Sandblasting ★★★★☆ ★★★☆☆
Nitrided steel Sandblasting ★★★☆☆ ★★★☆☆
Copper alloys
Brass, Bronze, Copper ★★★★★ ★★★★★
Aluminium alloys
Wrought alloys ★★★★☆ ★★★★☆
Foundry and die-casting alloys ★★★★☆ ★★★☆☆
Titanium alloys
Pure titanium and titanium alloys Sandblasting ★★★★☆ ★★★★★
Coating thickness
Nominal thickness, optional Tolerance
3÷75 µm ±10% (min. ±2µm)
Uniform thickness over entire external and internal surface
Absence of point effect typical of galvanic coatings
Aesthetic appearance
Bright stainless metal appearance based on the morphology of the machined piece
Matt finish option (sandblasted, shot peened or shotblasted)
In case of hardening treatment, the layer could become discoloured:
• 270-280°C, white colour and possible yellow halo effect
• 340°C, iridescent blue-red colour
The surface hardness of Niplate 600 varies according to the hardening heat treatment performed after layer deposition.
Hardness value Heat treatment
700±50HV Dehydrogenation 160-180°C x 4 hrs
800±50HV Hardening 270-280°C x 8 hrs
1000±50HV Hardening 340°C x 4 hrs
Wear resistance
Niplate 600 has high wear resistance, depending on the heat treatment performed.
Approximate wear value, TWI-CS10 Heat treatment
A low number indicates a better performance – ASTM B733 X1 – Taber Abraser wear test – abrasive wheels CS 10 – load 1 kg
16±2 mg / 1000 cycles Dehydrogenation 160-180°C x 4 hrs
12±2 mg / 1000 cycles Hardening 270-280°C x 8 hrs
9±2 mg / 1000 cycles Hardening 340°C x 4 hrs
Friction coefficient
Dynamic dry friction coefficient value
0.4 ÷ 0.6 depending on antagonist material
Corrosion resistance
The corrosion protection of Niplate 600, assessed by means of salt mist test, depends on the base material, piece machining and finishing and the thickness of the applied coating.
Approximate corrosion resistance values Base material
NSS according to ISO 9227 – Thickness 20 μm – corroded surface < 5%
≥1000 hours Brass
≥180 hours Carbon steel
≥240 hours Aluminium 6082
Chemical resistance
For application where high chemical resistance is required Niplate 500 is recommended in place of Niplate 600. Niplate 600 does in any case have good chemical resistance above all in alkaline environments.
Chemical compatibility
Approximate values of compatibility with the coating environment only, they do not indicate corrosion protection of the base material. The overall performance of the coated piece depends to a large extent also on the type and quality of the base material. The actual resistance to the environment must in any case be tested in the field.
Hydrocarbons (e.g. petrol, diesel fuel, mineral oil, toluene)
Alcohols, ketones (e.g. ethanol, methanol, acetone)
Neutral saline solutions (e.g. sodium chloride, magnesium chloride, brine)
Diluted reducing acids (e.g. citric acid, oxalic acid)
Oxidizing acids (e.g. nitric acid)
Concentrated acids (e.g. sulphuric acid, hydrochloric acid)
Diluted bases (e.g. diluted sodium hydroxide)
Oxidizing bases (e.g. sodium hypochlorite)
Concentrated bases (e.g. concentrated sodium hydroxide)
Easily braze weldable using RMA, RA acid flow agents
Presence of ferromagnetism Heat treatment
Ferromagnetic Dehydrogenation 160-180°C x 4 hrs
Ferromagnetic Hardening 270-280°C x 8 hrs
Ferromagnetic Hardening 340°C x 4 hrs
Melting point, solidus
8,1 g/cm3



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